Project Leader:
Dr. Rosanne DArrigo
Earth Institute Contact: Dr. Rosanne DArrigo
EI Collaborators:
Gordon Jacoby
Brendan Buckley
Locations: Canada, United States of America - Alaska
Description:
This research will develop new and extend existing tree ring records from the North American Arctic treeline. Since the northern limit of treeline coincides with the southern limit of the Arctic Front, this work will provide a spatial and temporal constraint on the Arctic Front over the last millennium. Field work will be undertaken to collect samples from northern Canada and Alaska. Analyses will include cross-dating, ring width, and measurement of maximum latewood density. All data will be standardized to maximize extraction of low frequency climatic variability. Finally, tree-ring chronologies will be incorporated into dendroclimatic reconstructions of past temperature. The broader impacts of this proposed research are that it will lead to information about the variation and nature of the forest tundra ecotone during a time of rapid environmental and climatic change.
EI Unit:
Lamont-Doherty Earth Observatory (LDEO)
Cross Cutting Themes:
Climate and Society
Core Disciplines:
Biology
Project Web Site:
http://www.ldeo.columbia.edu/trl/
Funding Agency:
National Science Foundation
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